ULTIMATE XT is our premium-plus solid tire. It uses advanced compounds developed to ensure maximum comfort, reliability, safety and the longest tire life. It has the highest abrasion resistance and tensile strength, the lowest energy consumption and the coolest running temperature. ULTIMATE XT has a modern and highly functional design and tread pattern that suits extreme terrain applications and provides optimal grip and traction. It is built for high-performance and is perfectly suited for harsh working conditions. Ultimate XT is simply the best in its category.